Cable bridge partition plate welding device

Abstract

The utility model provides a cable bridge partition plate welding device, and relates to the technical field of cable bridge welding, the cable bridge partition plate welding device comprises a base, a bearing surface is provided with a negative electrode plate along the length direction, a spot welding mechanism comprises at least one welding gun group, each welding gun group comprises a plurality of spot welding heads and can move vertically, and one welding gun group is provided with a corresponding transformer; each group of conductive mechanism is matched with each spot welding head, each group of conductive mechanism comprises a plurality of flexible conductive sheets corresponding to the spot welding heads and a driving assembly corresponding to each flexible conductive sheet, one end of each flexible conductive sheet is connected with the moving end of the corresponding driving assembly, and the other end of each flexible conductive sheet is electrically connected with the corresponding spot welding head through a conductive block; in the first state, the flexible conducting strip abuts against the positive electrode plate to achieve electric connection between the flexible conducting strip and the positive electrode plate, and in the second state, the flexible conducting strip is separated from the positive electrode plate. The stability and reliability of the welding quality of the cable bridge partition plate and the control flexibility of the welding process are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cable bridge welding, in particular to a cable bridge partition welding device. Background Art

[0002] During the production and installation of cable trays, it is often necessary to weld partitions in the slots of the cable trays to separate and organize the cables. Currently, the commonly used welding methods are carbon dioxide gas shielded welding and spot welding.

[0003] CO2 gas shielded welding requires high temperatures, typically between 600 and 800 degrees Celsius. During the welding process, high temperatures can damage the galvanized coating on the cable tray surface, creating black spots and affecting the product's appearance. To enhance the product's appearance, additional galvanizing or painting is required, which not only adds additional processing and costs, but also poses environmental hazards.

[0004] The existing spot welding method requires manual squeezing of the partitions and the cable tray with great pressure. Due to the long length of the cable tray, it is necessary to manually use a spot welding gun to perform multiple spot welding along the length direction. The entire process requires the use of a large pressure to press the workpiece, and the operation is relatively complicated. There are certain limitations in the actual application of welding long workpieces such as cable tray partitions. Utility Model Content

[0005] In view of the above-mentioned defects or deficiencies in the prior art, the present invention aims to provide a cable tray partition welding device, comprising:

[0006] A base, the base comprising a base and a fixing bracket connected to the base, a processing space being defined between the fixing bracket and the base, the base having a bearing surface located below the fixing bracket, the bearing surface being provided with a negative electrode plate along its length, the negative electrode plate being provided with a plurality of conductive support blocks for placing workpieces to be welded;

[0007] A spot welding mechanism, the spot welding mechanism comprising at least one welding gun group, the welding gun group comprising a plurality of spot welding heads sequentially distributed along the length direction of the bearing surface, the spot welding heads being disposed in the processing space, and each of the spot welding heads being movable in a direction perpendicular to the bearing surface;

[0008] at least one positive electrode plate, the positive electrode plate being fixedly mounted on the fixing bracket and located in the processing space;

[0009] At least one group of conductive mechanisms, each group of the conductive mechanisms is provided in conjunction with the welding gun group, each group of the conductive mechanisms includes a plurality of flexible conductive sheets corresponding to the spot welding heads, and a drive assembly corresponding to each flexible conductive sheet, the drive assembly is fixed in the processing space, one end of the flexible conductive sheet is connected to the movable end of the corresponding drive assembly, and the other end is electrically connected to the corresponding spot welding head through a conductive block; the flexible conductive sheet has a first state and a second state, in the first state, the flexible conductive sheet abuts against the positive electrode plate to achieve electrical connection between the two, and in the second state, the flexible conductive sheet is separated from the positive electrode plate; the drive assembly is used to drive the corresponding flexible conductive sheet to switch between the first state and the second state;

[0010] A group of the conductive mechanisms has a corresponding transformer and the positive electrode plate, and the transformer provides power for the positive electrode plate and the negative electrode plate of the group; when the workpiece to be welded is placed on the conductive support block, each of the driving components drives the corresponding flexible conductive sheet one by one to be in the first state, so as to turn on the spot welding heads one by one and weld the workpiece to be welded in sequence at each vertical projection point of the spot welding head.

[0011] According to the technical solution provided by the utility model, a downward pressure cylinder is installed on the fixed bracket, the fixed end of the downward pressure cylinder is fixed on the fixed bracket, and the movable end of the downward pressure cylinder is connected to the conductive mechanism; the downward pressure cylinder is used to control multiple spot welding heads to move synchronously in a direction perpendicular to the bearing surface.

[0012] According to the technical solution provided by the present utility model, the spot welding mechanism includes two groups of welding gun groups, each group of the welding gun groups includes three spot welding heads, and each transformer provides power to three adjacent positive electrode plates and negative electrode plates; the negative pole of the transformer is connected to the negative electrode plate; and the positive pole of the transformer is connected to the positive electrode plate.

[0013] According to the technical solution provided by the present invention, among all the spot welding heads that are powered by the same transformer, the first resistance of the current flow path corresponding to the outermost spot welding head is less than or equal to the product of the second resistance of the current flow path corresponding to the middle spot welding head and the first coefficient; wherein the first coefficient is greater than 1.

[0014] According to the technical solution provided by the present utility model, the first coefficient is 1.1.

[0015] According to the technical solution provided by the present invention, a transmission roller is further provided between any two adjacent conductive support blocks, and the transmission roller is used to move the workpiece to be welded along the length direction of the bearing surface.

[0016] According to the technical solution provided by the present invention, the flexible conductive sheet includes a plurality of flexible conductive strips, and both ends of all the flexible conductive strips along the extension direction are welded to form a rigid connection portion.

[0017] According to the technical solution provided by the utility model, a cooling water circulation channel is provided inside each spot welding head. The cooling water circulation channel has a water inlet and a water outlet, which is used to circulate cooling water inside the spot welding head to reduce the temperature of the spot welding head during welding.

[0018] According to the technical solution provided by the present invention, the driving component is a telescopic cylinder, the fixed end of the telescopic cylinder is installed on the fixed bracket, and the movable end of the telescopic cylinder is connected to the rigid connection part at one end of the flexible conductive strip.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention adopts spot welding for welding, and the temperature is between 200 and 300 degrees. Compared with the high temperature of carbon dioxide gas shielded welding, it will not damage the zinc coating on the surface of the cable tray, avoid the problem of generating black spots, and thus do not need to be galvanized or spray-painted again, saving processing costs and reducing harm to the environment. The welding device has multiple spot welding heads distributed in sequence along the length of the bearing surface, and can simultaneously perform spot welding on multiple welding points, which is suitable for welding long strip cable tray partitions and improves construction efficiency. Each spot welding head can be individually turned on and controlled by the corresponding drive assembly. Among them, multiple spot welding heads are grouped together, and each group uses a transformer for power supply, which not only ensures smooth power supply, but also enables point-by-point welding, and can accurately align the welding points for welding. During a single point-by-point welding, other spot welding heads can also press down to keep the workpiece to be welded stable, without the need for excessive pressure, ensuring the stability and reliability of the cable tray partition welding quality and the control flexibility of the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a cable tray partition welding device provided in an embodiment of the present utility model;

[0021] Figure 2 A schematic structural diagram of the outer edge cover of the cable tray partition welding device provided by an embodiment of the present utility model;

[0022] Figure 3 This is a schematic structural diagram of the spot welding mechanism and the conductive mechanism provided in an embodiment of the utility model.

[0023] The text annotations in the figure represent:

[0024] 1. Base; 2. Fixed bracket; 3. Down-pressing cylinder; 4. Negative electrode plate; 5. Spot welding head; 6. Conductive block; 7. Flexible conductive sheet; 8. Telescopic cylinder; 9. Conductive support block; 10. Transmission roller; 11. Positive electrode plate. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] Example 1

[0028] As mentioned in the background technology, in order to solve the problems in the prior art, the utility model proposes a cable tray partition welding device, please refer to Figure 1 Shown, including:

[0029] The base comprises a base 1 and a fixing bracket 2 connected to the base 1, with a processing space between the fixing bracket 2 and the base 1. The base 1 has a bearing surface located below the fixing bracket 2, and a negative electrode plate 4 is provided on the bearing surface along its length. The negative electrode plate 4 is provided with multiple conductive support blocks 9 for placing workpieces to be welded;

[0030] at least one positive electrode plate 11, the positive electrode plate 11 being fixedly mounted on the fixing bracket 2 and located in the processing space;

[0031] Specifically, the base 1 is made of a solid metal material and has sufficient stability and load-bearing capacity. The fixed bracket 2 is firmly connected to the base 1 by welding, bolt connection, etc. to ensure that no shaking or displacement occurs during the welding process. The fixed bracket 2 and the base 1 are covered with insulating covers to avoid the risk of electric shock to the staff. The height and shape of the fixed bracket 2 are designed according to actual needs to ensure that the size of the processing space is appropriate to facilitate the operation and movement of the spot welding head 5. On the bearing surface of the base 1, the negative electrode plate 4 is laid along its length. The negative electrode plate 4 can be made of a metal material with good electrical conductivity, such as copper, aluminum, etc. The negative electrode plate 4 is isolated from the base 1 by an insulating material to prevent current leakage.

[0032] Specifically, the positive electrode plate 11 is connected to the positive pole of the transformer. The negative electrode plate 4 should be connected to the negative pole of the transformer. The workpieces to be welded are a cable tray and a separator. The separator is placed within the internal slot of the cable tray, and the cable tray and separator are welded together along their length using the welding device.

[0033] Please refer to Figure 3 As shown, the spot welding mechanism includes at least one welding gun group, the welding gun group includes a plurality of spot welding heads 5 distributed in sequence along the length direction of the bearing surface, the spot welding heads 5 are arranged in the processing space, and each of the spot welding heads 5 can move in a direction perpendicular to the bearing surface; a group of the welding gun groups has a corresponding transformer to provide power to the spot welding heads in the welding gun group;

[0034] The plurality of spot welding heads 5 are sequentially distributed within the processing space along the length of the support surface. The number of the spot welding heads 5 can be adjusted according to actual welding requirements. The spot welding heads 5 can also be moved perpendicular to the support surface via mechanisms such as guide rails and sliders. This movement can be achieved through motor drive, hydraulic drive, or pneumatic drive, ensuring that the spot welding heads 5 can accurately align with the welding points of the workpiece to be welded.

[0035] At least one group of conductive mechanisms, each group of the conductive mechanisms is provided in conjunction with the welding gun group, each group of the conductive mechanisms includes a plurality of flexible conductive sheets 7 corresponding to the spot welding heads 5, and a drive assembly corresponding to each flexible conductive sheet 7, the drive assembly is fixed in the processing space, one end of the flexible conductive sheet 7 is connected to the movable end of the corresponding drive assembly, and the other end is electrically connected to the corresponding spot welding head 5 through the conductive block 6; the flexible conductive sheet 7 has a first state and a second state, in the first state, the flexible conductive sheet 7 abuts against the positive electrode plate 11 to achieve electrical connection between the two, and in the second state, the flexible conductive sheet 7 is separated from the positive electrode plate 11; the drive assembly is used to drive the corresponding flexible conductive sheet 7 to switch between the first state and the second state;

[0036] Specifically, the conductive block 6 can be made of a metal material with good electrical conductivity, such as copper or aluminum. The conductive block 6 is secured to the spot welding head 5 by welding, bolting, or other means to ensure that it does not loosen or shift during the welding process. The positive electrode plate 11 can be made of the same material as the negative electrode plate 4. Its area and shape should be designed according to actual needs to ensure good contact and electrical conductivity with the flexible conductive sheet 7.

[0037] A group of the conductive mechanisms has a corresponding transformer to provide power for the positive electrode plate and the negative electrode plate corresponding to the flexible conductive sheet 7 of the group; when the workpiece to be welded is placed on the conductive support block 9, each of the driving components drives the corresponding flexible conductive sheet 7 one by one to be in the first state, so as to turn on the spot welding head 5 one by one to weld the workpiece to be welded in sequence at each vertical projection point of the spot welding head 5.

[0038] Specifically, a method for using the welding device to weld a workpiece to be welded is described: the workpiece to be welded, such as a cable tray and a partition, is placed on the conductive support block 9. The cable tray is first placed on the conductive support block 9, and then the partition is placed inside the cable tray. The spot welding mechanism is controlled to move downward to press the workpiece to be welded (pressing the partition inside the cable tray) so that each spot welding head 5 is aligned with the corresponding welding point position. Based on the position of the welding point of the workpiece to be welded, the spot welding head 5 is controlled to move in a direction perpendicular to the support surface to accurately align the spot welding head 5 with the welding point. The position of the spot welding head 5 can be detected and controlled using sensors, encoders, and other methods. Appropriate welding parameters, such as welding current, welding time, and welding pressure, are set based on the material and thickness of the workpiece to be welded. The welding parameters can be adjusted and optimized using a welding control system to ensure welding quality and efficiency. After reaching the welding pressure, spot welding is performed point by point or simultaneously according to the welding requirements. Usually, spot welding is performed point by point. At this time, each corresponding flexible conductive sheet 7 is driven in the first state by the driving component in turn, so that the corresponding spot welding head 5 is powered on, and the projection points of the spot welding head 5 of the workpiece to be welded are welded in sequence. During the welding process, the welding current, voltage, temperature and other parameters can be monitored in real time by sensors to ensure the stability and safety of the welding process. When the welding of this welding point is completed, the flexible conductive sheet 7 is controlled to switch to the second state, so that the spot welding head 5 is powered off, and then the flexible conductive sheet 7 corresponding to the second spot welding head 5 is controlled to switch to the first state, and the welding of the next welding point is performed, and so on, until all welding points are fully welded. The welding process can be automatically controlled by a welding control system to improve welding efficiency and quality.

[0039] Furthermore, the flexible conductive sheet 7 includes a plurality of flexible conductive strips, and both ends of all the flexible conductive strips along the extension direction are welded to form a rigid connection portion.

[0040] Furthermore, the driving component is a telescopic cylinder 8, the fixed end of the telescopic cylinder 8 is installed on the fixed bracket 2, the movable end of the telescopic cylinder 8 is connected to the rigid connection part at one end of the flexible conductive sheet 7, and the rigid connection part at the other end of the flexible conductive sheet 7 is connected to the conductive block 6.

[0041] Specifically, the rigid connection portion can be made of materials with high strength and electrical conductivity, such as copper sheets and aluminum sheets. The welding method can adopt reliable connection methods such as spot welding and soldering to ensure that the connection between the flexible conductive strips is firm and the electrical conductivity is good. Under the pushing action of the telescopic cylinder 8, the flexible conductive sheet 7 can be pushed away from the rigid connection portion at one end of the conductive block 6 to abut against the positive electrode plate 11, so that the welding current loop is conductive and the spot welding head 5 is energized. The flexibility of the flexible conductive sheet 7 can adapt to the movement of the spot welding head 5 and the shape change of the workpiece to be welded, and the rigidity of the end can ensure the stability of the conductive connection.

[0042] Furthermore, the spot welding mechanism includes two groups of welding gun groups, each group of welding gun groups includes three spot welding heads 5, and each transformer provides power to the driving components corresponding to three adjacent spot welding heads 5; the negative pole of the transformer is connected to the negative electrode plate 4; and the positive pole of the transformer is connected to the positive electrode plate 11.

[0043] Specifically, the positive output terminal of the transformer is connected to the positive electrode plate 11 through a wire, and the negative output terminal of the transformer is connected to the negative electrode plate 4 through a wire.

[0044] Specifically, when the telescopic cylinder 8 pushes the flexible conductive sheet 7 away from the rigid connection portion of one end of the conductive block 6 and into close contact with the positive electrode plate 11, a power-on state is achieved. In the power-on state, the positive output terminal of the transformer passes through the positive electrode plate 11, through the flexible conductive sheet 7, and reaches the conductive block 6. The conductive block 6 then transmits the current to the spot welding head 5, causing the spot welding head 5 to be energized. At the same time, since the spot welding head 5 is in contact with the cable tray and partition, and the cable tray and partition are electrically connected to the negative electrode plate 4 through the conductive support block 9, and the negative electrode plate 4 is connected to the negative pole of the transformer, a complete welding current loop is formed. After welding is completed, the telescopic cylinder 8 retracts, causing the rigid connection portion of the flexible conductive sheet 7 away from the conductive block 6 to separate from the positive electrode plate 11. The above-mentioned welding current loop is disconnected, and the spot welding head 5 is also de-energized.

[0045] In a preferred embodiment, a downward-pressing cylinder 3 is installed on the fixed bracket 2, the fixed end of the downward-pressing cylinder 3 is fixed on the fixed bracket 2, and the movable end of the downward-pressing cylinder 3 is connected to the conductive mechanism; the downward-pressing cylinder is used to control multiple spot welding heads 5 to move synchronously in a direction perpendicular to the bearing surface.

[0046] Specifically, each of the conductive blocks 6 is connected to an insulating block, which is connected to the moving end of the downward pressure cylinder. When welding is required, the moving end of the downward pressure cylinder 3 is extended to move the spot welding head 5 downward.

[0047] Specifically, when welding operation is required, the downward pressure cylinder 3 is started so that its moving end extends downward. The moving end of the downward pressure cylinder 3 pushes the spot welding mechanism to move toward the workpiece to be welded on the bearing surface, so that the spot welding head 5 is close to the workpiece to be welded. By controlling the stroke and pressure of the downward pressure cylinder 3, the contact pressure between the spot welding head 5 and the workpiece to be welded can be adjusted to ensure the welding quality. This embodiment adopts a method of lifting and lowering the spot welding mechanism as a whole, so that even if the spot welding head 5 is not powered on, it can still press the workpiece to be welded downward and fix it, reducing the need for manual pressure or the use of additional fixing devices, greatly simplifying the complexity and cost of the work process.

[0048] Specifically, the transformer should be installed as close as possible to the spot welding head 5 and the negative electrode plate 4 to reduce the length of the wire and reduce losses during power transmission. The negative pole of the transformer is connected to the negative electrode plate 4 via a wire. The connecting wire should have good conductivity and sufficient cross-sectional area to ensure that current can flow stably from the negative pole of the transformer to the negative electrode plate 4. Reliable methods such as welding and bolting can be used for the connection.

[0049] Furthermore, the six spot welding heads 5 are numbered 1 to 6 along the length of the support surface, corresponding to six drive assemblies. Based on the transformer power distribution, each group of three adjacent spot welding heads 5 is powered by a single transformer. For example, spot welding heads 1, 2, and 3 are powered by one transformer, while spot welding heads 4, 5, and 6 are powered by another transformer.

[0050] In a preferred embodiment, among all the spot welding heads 5 that are powered by the same transformer, the first resistance of the current flow path corresponding to the outermost spot welding head 5 is less than or equal to the product of the second resistance of the current flow path corresponding to the middle spot welding head 5 and the first coefficient; wherein the first coefficient is greater than 1.

[0051] Furthermore, the first coefficient is 1.1.

[0052] Specifically, the three spot welding heads 5, powered by the same transformer, determine the current flow path corresponding to each spot welding head 5. The current starts from the positive output terminal of the transformer, passes through the positive electrode plate 11, the flexible conductive sheet 7, the conductive block 6, the spot welding head 5, the workpiece to be welded, the conductive support block 9, the negative electrode plate 4, and finally returns to the negative terminal of the transformer, thus forming a complete welding current loop.

[0053] Specifically, in a welding device where multiple spot welding heads 5 share a common transformer for power supply, it is necessary to ensure that current is distributed relatively evenly across the various spot welding heads 5. If the resistance of the outermost (most) flexible conductive sheet 7 differs significantly from that of the middle flexible conductive sheet 7, this can lead to uneven current distribution across the various spot welding heads 5. If the resistance of the outermost flexible conductive sheet 7 is too high, current tends to flow toward the middle spot welding head 5 with lower resistance, resulting in insufficient current for the outer spot welding heads 5, impacting welding quality and effectiveness. By defining this resistance relationship, relatively uniform current distribution can be achieved to a certain extent.

[0054] Specifically, when the resistance variation of the flexible conductive sheet 7 is small, the electrical performance of the entire welding system is more stable. This helps reduce voltage fluctuations and localized overheating caused by resistance imbalance, thereby improving system reliability and service life. Furthermore, smaller resistance variations facilitate adjustment and optimization of the welding process, improving production efficiency and product quality.

[0055] Specifically, the conductive support block 9 is provided corresponding to the position of the spot welding head 5. The conductive support block 9 can prevent the workpiece to be welded from being deformed or shifted due to gravity or other external forces, ensuring that the spot welding head 5 can accurately align with the welding position.

[0056] In a preferred embodiment, a transmission roller 10 is further provided between any two adjacent conductive support blocks 9 , and the transmission roller 10 is used to move the workpiece to be welded along the length direction of the bearing surface.

[0057] Specifically, a transmission roller 10 is installed between any two adjacent conductive support blocks 9. The transmission roller 10 can be installed on the negative electrode plate 4 by means of bearings, brackets and other components to ensure that it can rotate freely. The number and spacing of the transmission rollers 10 can be reasonably adjusted according to the size and weight of the workpiece to be welded to ensure that the workpiece to be welded can move smoothly on the bearing surface. The transmission roller 10 is used to move the workpiece to be welded along the length direction of the bearing surface. During the welding process, the transmission roller 10 can be driven to rotate by a transmission device such as a motor, chain, or belt, thereby driving the workpiece to be welded to move on the bearing surface to achieve continuous welding. The provision of the transmission roller 10 can improve welding efficiency, reduce manual operation, and also ensure the accuracy and consistency of the welding position.

[0058] In a preferred embodiment, a cooling water circulation channel is provided inside each of the spot welding heads 5. The cooling water circulation channel has a water inlet and a water outlet, which is used to circulate cooling water inside the spot welding head 5 to reduce the temperature of the spot welding head 5 during the welding process.

[0059] Specifically, cooling water circulates within the spot welding head 5, reducing its temperature during the welding process. During welding, the spot welding head 5 generates a significant amount of heat. If not promptly cooled, the temperature of the spot welding head 5 can overheat, impacting weld quality and the lifespan of the spot welding head 5. The cooling water circulation effectively removes the heat generated by the spot welding head 5, maintaining its temperature within a reasonable range and improving weld quality and reliability.

[0060] Specifically, the telescopic cylinder 8 drives the flexible conductive sheet 7 to switch between the first and second states. When a spot welding head 5 is energized for welding, the corresponding telescopic cylinder 8 extends, pushing the corresponding flexible conductive sheet 7 into contact with the positive electrode plate 11, thus energizing the welding current circuit. When welding is complete or the spot welding head 5 no longer needs to be energized, the telescopic cylinder 8 retracts, pulling the flexible conductive sheet 7 away from the positive electrode plate 11, thus disconnecting the welding current circuit.

[0061] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. A cable tray partition welding device, characterized in that: include: A base, the base comprising a base (1) and a fixing bracket (2) connected to the base (1), a processing space being provided between the fixing bracket (2) and the base (1), the base (1) having a bearing surface located below the fixing bracket (2), the bearing surface being provided with a negative electrode plate (4) along its length, the negative electrode plate (4) being provided with a plurality of conductive support blocks (9) for placing workpieces to be welded; A spot welding mechanism, the spot welding mechanism comprising at least one welding gun group, the welding gun group comprising a plurality of spot welding heads (5) sequentially distributed along the length direction of the bearing surface, the spot welding heads (5) being arranged in the processing space, and each of the spot welding heads (5) being movable in a direction perpendicular to the bearing surface; at least one positive electrode plate (11), the positive electrode plate (11) being fixedly mounted on the fixing bracket (2) and located within the processing space; At least one group of conductive mechanisms, each group of conductive mechanisms is matched with the welding gun group, each group of conductive mechanisms includes a plurality of flexible conductive sheets (7) corresponding to the spot welding heads (5), and a drive assembly corresponding to each flexible conductive sheet (7), the drive assembly being fixed in the processing space, one end of the flexible conductive sheet (7) being connected to the movable end of the corresponding drive assembly, and the other end being electrically connected to the corresponding spot welding head (5) through a conductive block (6); the flexible conductive sheet (7) having a first state and a second state, in the first state, the flexible conductive sheet (7) abuts against the positive electrode plate (11) to achieve electrical connection between the two, and in the second state, the flexible conductive sheet (7) is separated from the positive electrode plate (11); the drive assembly is used to drive the corresponding flexible conductive sheet (7) to switch between the first state and the second state; A group of the conductive mechanisms has a corresponding transformer and the positive electrode plate (11), and the transformer provides power for the positive electrode plate (11) and the negative electrode plate (4); when the workpiece to be welded is placed on the conductive support block (9), each of the driving components drives the corresponding flexible conductive sheet (7) one by one to be in the first state, so as to turn on the spot welding heads (5) one by one to weld the workpiece to be welded in sequence at each vertical projection point of the spot welding head (5).

2. The cable tray partition welding device according to claim 1, characterized in that: A downward pressure cylinder (3) is installed on the fixed bracket (2), the fixed end of the downward pressure cylinder (3) is fixed on the fixed bracket (2), and the movable end of the downward pressure cylinder (3) is connected to the conductive mechanism; the downward pressure cylinder (3) is used to control the synchronous movement of multiple spot welding heads (5) in a direction perpendicular to the bearing surface.

3. The cable tray partition welding device according to claim 1, characterized in that: The spot welding mechanism comprises two groups of welding gun groups, each group of welding gun groups comprises three spot welding heads (5), and each transformer provides power to the positive electrode plate (11) and the negative electrode plate (4) corresponding to three adjacent spot welding heads (5); the negative pole of the transformer is connected to the negative electrode plate (4); and the positive pole of the transformer is connected to the positive electrode plate (11).

4. The cable tray partition welding device according to claim 3, characterized in that: Among all the spot welding heads (5) supplied with power by the same transformer, a first resistance of a current flow path corresponding to the outermost spot welding head (5) is less than or equal to a product of a second resistance of a current flow path corresponding to the middle spot welding head (5) and a first coefficient; wherein the first coefficient is greater than 1.

5. The cable tray partition welding device according to claim 4, characterized in that: The first coefficient is 1.

1.

6. The cable tray partition welding device according to claim 1, characterized in that: A transmission roller (10) is further provided between any two adjacent conductive support blocks (9), and the transmission roller (10) is used to move the workpiece to be welded along the length direction of the bearing surface.

7. The cable tray partition welding device according to claim 1, characterized in that: The flexible conductive sheet (7) comprises a plurality of flexible conductive strips, and both ends of all the flexible conductive strips along the extension direction are welded to form a rigid connection portion.

8. The cable tray partition welding device according to claim 1, characterized in that: A cooling water circulation channel is provided inside each of the spot welding heads (5), and the cooling water circulation channel has a water inlet and a water outlet, and is used to allow cooling water to circulate inside the spot welding head (5) to reduce the temperature of the spot welding head (5) during the welding process.

9. The cable tray partition welding device according to claim 7, characterized in that: The driving component is a telescopic cylinder (8), the fixed end of the telescopic cylinder (8) is mounted on the fixed bracket (2), and the movable end of the telescopic cylinder (8) is connected to the rigid connection portion at one end of the flexible conductive strip.

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